943  
CDUS45 KRIW 100731  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
131 AM MDT WED MAY 10 2023  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR MAY 9 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 75 1:34 PM 85 2007 68 7 51  
MINIMUM 46 5:43 AM 20 2002 41 5 35  
AVERAGE 61 54 7 43  
 
PRECIPITATION (IN)  
YESTERDAY T 0.56 1999 0.04 -0.04 0.00  
MONTH TO DATE 0.11 0.28 -0.17 0.01  
SINCE MAR 1 0.68 1.03 -0.35 1.79  
SINCE JAN 1 0.79 1.30 -0.51 1.82  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 11 -7 22  
MONTH TO DATE 49 112 -63 103  
SINCE MAR 1 1406 1502 -96 1675  
SINCE JUL 1 7637 7326 311 6999  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 2 0 2 1  
SINCE MAR 1 2 1 1 1  
SINCE JAN 1 2 1 1 1    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 9.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 5:00 AM  
LOWEST 12 7:00 PM  
AVERAGE 43  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 82 2007  
MINIMUM TEMPERATURE (F) 41 28 2022  
 
SUNRISE AND SUNSET  
MAY 10 2023...........SUNRISE 5:51 AM MDT SUNSET 8:27 PM MDT  
MAY 11 2023...........SUNRISE 5:50 AM MDT SUNSET 8:29 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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